دسته : پزشکی
فرمت فایل : word
حجم فایل : 53 KB
تعداد صفحات : 8
بازدیدها : 235
برچسبها : دانلود مقاله
مبلغ : 1500 تومان
خرید این فایلمقاله حمله قلبی
List of Subject
Title:
What is Heart Attack?
What Causes a Heart Attack?
How is a Heart Attack Diagnosed?
How Can I Prevent a Heart Attack?
Resources
What Is a Heart Attack?
A heart attack occurs when the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery. Often, this blockage leads to arrhythmias (irregular heartbeat or rhythm) that cause a severe decrease in the pumping function of the heart and may bring about sudden death. If the blockage is not treated within a few hours, the affected heart muscle will die and be replaced by scar tissue.
A heart attack is a life-threatening event. Everyone should know the warning signs of a heart attack and how to get emergency help. Many people suffer permanent damage to their hearts or die because they do not get help immediately.
Each year, more than a million persons in the U.S. have a heart attack and about half (515,000) of them die. About one-half of those who die do so within 1 hour of the start of symptoms and before reaching the hospital.